Home Osteomyelitis or Septic Arthritis-Child (Excluding Axial Skeleton)
Scenario Scenario ID Procedure Adult RRL Peds RRL Appropriateness Category
Septic arthritis suspected, knee, radiography normal, next imaging study 3195103
US knee
0 mSv
O
0 mSv [ped]
O
Usually appropriate
Image-guided aspiration knee

Varies

Varies
Usually appropriate
MRI knee without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually appropriate
MRI knee without IV contrast
0 mSv
O
0 mSv [ped]
O
May be appropriate
MRI lower extremity without and with IV contrast
0 mSv
O
0 mSv [ped]
O
May be appropriate
MRI lower extremity without IV contrast
0 mSv
O
0 mSv [ped]
O
May be appropriate
Bone scan whole body and 3-phase bone scan knee

3-10 mSv [ped]
☢☢☢☢
Usually not appropriate
MRI whole body without and with IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
MRI whole body without IV contrast
0 mSv
O
0 mSv [ped]
O
Usually not appropriate
CT knee with IV contrast
<0.1 mSv
0.03-0.3 mSv [ped]
☢☢
Usually not appropriate
CT knee without and with IV contrast
<0.1 mSv
0.03-0.3 mSv [ped]
☢☢
Usually not appropriate
CT knee without IV contrast
<0.1 mSv
0.03-0.3 mSv [ped]
☢☢
Usually not appropriate
3-phase bone scan knee
1-10 mSv
☢☢☢

Usually not appropriate
Bone scan whole body
1-10 mSv
☢☢☢
3-10 mSv [ped]
☢☢☢☢
Usually not appropriate